# This Makefile is EXTREMELY simple.  Let's keep it that way.

all:
	@echo Random123 is a header-only package.  There is nothing to build.
	@echo 'However, "make install" understands prefix, DESTDIR, etc.,'
	@echo 'and "make check" understands CFLAGS, CXXFLAGS, LDFLAGS, etc.'
	@echo '"make html" will run doxygen to create docs/html'
.PHONY: all

check:
	cd tests && $(MAKE) runcore
.PHONY: check

prefix?=/usr/local
includedir?=$(prefix)/include
datarootdir?=$(prefix)/share
datadir?=$(datarootdir)
docdir?=$(datarootdir)/doc/Random123
export prefix includedir datarootdir datadir docdir

install: install-html install-include install-examples install-tests
.PHONY: install

# recursively copy include/Random123 to $(includedir)
install-include:
	mkdir -p $(DESTDIR)$(includedir)
	cp -dr include/Random123 $(DESTDIR)$(includedir)
.PHONY: install-include

# docs/main.md is the same as README.md, but it has a @mainpage
# directive, and the @ref directives are *not* commented out.
docs/main.md : README.md
	echo @mainpage Random123: a Library of Counter-Based Random Number Generators > docs/main.md
	echo '<!--- DO NOT EDIT THIS FILE.  IT IS GENERATED by ../GNUmakefile -->' >> docs/main.md
	sed -e 's/<!-- \([^-]*\)-->/\1/g' README.md >> docs/main.md

# the html target removes and then recreates docs/html.
html: docs/main.md
	-[ -d docs/html ] && rm -rf docs/html
	cd docs && doxygen
.PHONY: html

install-html: html
	mkdir -p $(DESTDIR)$(docdir)
	-[ -d $(DESTDIR)$(docdir)/html ] && rm -rf $(DESTDIR)$(docdir)/html
	cp -a docs/html $(DESTDIR)$(docdir)
.PHONY: install-html

# install-examples and install-tests copy files to
# $(DESTDIR)$(docdir).  Since 'make check' (or other devel activity)
# might "pollute" the examples/ and tests/ directories, the files to
# be copied are enumerated in {examples,tests}/GNUmakefile.
install-examples:
	cd examples; $(MAKE) install
.PHONY: install-examples

install-tests:
	cd tests; $(MAKE) install
.PHONY: install-tests